423812664 has 72 divisors (see below), whose sum is σ = 1261685880. Its totient is φ = 128425440.

The previous prime is 423812663. The next prime is 423812693. The reversal of 423812664 is 466218324.

It is a tau number, because it is divible by the number of its divisors (72).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423812663) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15612 + ... + 33035.

It is an arithmetic number, because the mean of its divisors is an integer number (17523415).

Almost surely, 2^423812664 is an apocalyptic number.

423812664 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

423812664 is an abundant number, since it is smaller than the sum of its proper divisors (837873216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423812664 is a wasteful number, since it uses less digits than its factorization.

423812664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48681 (or 48663 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 423812664 is about 20586.7108591926. The cubic root of 423812664 is about 751.1464918489.

The spelling of 423812664 in words is "four hundred twenty-three million, eight hundred twelve thousand, six hundred sixty-four".